Coffee-making machine



May w, 19%

Filed Jan. 28. 1922 2 Sheets-Sheet 1 gnvenfot May is, 1924, 1,493,984

M. IGLESIAS COFFEE MAKING MACHINE Filed Jan. 28. 1 22 2 Sheets-$heet 2 attorneys 115 small aten May 13,1924.

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A lication ma Januar as, 1922. Serial no. 532,391.

To all whom it may concern.

Be it known that MANUEL Ionnsms, a citizen of the Republic of Argentina, residing at Buenos Aires, Argentmafhas 111- 5 vented certain new and useful Improvements in Cofiee-Making Machines, of which the following is aspecification- This invention relates to an electrically heated and instantly acting coffee maklng W ap aratus, more particularly adapted forma a; a single cup, or a small quantity of codes verage, at a time.

The object of my invention is to provide for instantly heating, by electric current, a uantity of water, and to provide a s ecial y constructed water inlet and. (118- c arge faucet, wherein a simple movement of a valve will admit water to'the electrically heated boiler and cause discharge of fill hot water and steam tfrom .to a con tainer cup having a filter upon which is placed granular or powdered coffee, so that a cofiee infusion ma be quickly pre ared as the hot water an steam are force un- 25 der pressure through the powdered coffee in said container.

Another object of the invention is to provide an improved construction of container and filter support for granular codes, and

mechanism for quickly connecting it to, and

disconnecting it from, the water inlet and dischar faucet.

The princigw parts of the apparatus are, an electricaly heated boiler 3, preferably horizontal, a water inlet and discharge in which 2- Figure 1 represents a longitudinal vertical section.

Fig. 2 repnts a vertical transverse section on line 2-2 of Fig. 1..

in my apparatus l provide a faucet body 1 having centrally at one side a boss 2,

screw-threaded at a, also having an upper boss 2", screw-threaded at b, and a lower boss 2", screw-threaded at 0. A cylindrical boiler 3, horizontally arranged, is connected 2 and its outer end by flange 3 and bolts and nuts to, to a suitable support X. The interior of the body is bored out at one end to form a valve receiving chamber 1, Fig. 2, into which is fitted a hollow plug 5, having an annular flange d which is heldagainst an annular seat 2 by an annular shoulder on the screw ca 6". The plug 5 is hollow and has at its inner end an interior coarse or heavy screw-thread f for engagin a similar thread on the valve stem 31. n the outer end plug is fitted a stufiing box 6 around the valve steam 31. The opposite end of the body is bored to form a valve chamber 1", in which is fitted a pressure .regulatin or relief valve 27 resting on a seat a, an closing a steam escape passage 9'. The chamber 1" is closed by a screw-cap 6, having a steam blow-01f openo the upper boss 2 is screwed the waterreceiving chamber 7, having a water supply pipe 7. In the body 1 and the boss 2" is made an inlet passage 8, connecting chamber 7 with the interior chamber 9, which latter is a continuation of the valve chamber 1. This chamber is provided with a valve seat e for the disk valve 30, which is secured by its rear stem n in the main valve stem 31. In the in" 1 is made a second water inlet passage 10 o ening into the valve chamber at the rear 0; valve when the latter is inthe closed position as shown in Fig.2. The opening of passage 10 is indicated by dotted lines in Fig. 2. en the valve 30 is retracted from its seat e, the sage 10 will connect with chamber 9. i passage 10 extends out through the body 1 and its boss 2, Fig. 1, and has connecting with it the boiler feed pipe 11 which is curved, so that its discharge end is close tie the bottom of the boiler, as shown in the body 1, at one side of passage 10 v is made a horizontal outlet passage 14, an

to the left of chamber 9 is made a downwardly inclined passa e 14!, leading from passage 14 down 1nto t e. chamber 16 at the end of boss 2". The passage 14' connects also with the steam vent passage 9", Fig. 2. To the outer end of passage 14 in boss 2 is connected a siphon elbow 12 having a passage 13 to provide for the outflow of water and steam to the filter cup 20.

at at its screwahreadesi i ner seats il? A p n g P pp r ing em e a is connected by its central screw-threaded neck 4, with the lower boss 2, which is screw-threaded at c. This member forms a tight fitting cover for the filter cup, be ng provided in its periphe with a screw-like groove 1', and at its un er side with a depending annular rib l for co o rating with other parts.to make a tight oint. A filtercup holding frame or socket 15 preferably 0 n at one side, as shown in Fig. 1, is provided at its upper edfe with an -1nwardly projecting screw rib adapted to engialge with the groove i in the member. 4. e frame 15 is also provided with an inner annular rib p, which serves as a bearing for the filter cup 20. The groove 1' and rib kmay be broken or interrupted like the grooves and ribs of a breech block in ordnance, so as to readily interlock and permit quick enga ment of the arts. The frame 15 is provi ed with a thic stron base 15, having a central 0 nin and a andle 23, Fi 1. Upon the see 1s fitted a rotatable dis 21 having a central opening-for receiving the ad'ustln 'nut 22. The ter cup 20 is provide at t e bottom with a dischar e nozzle 20' which is externallly screw-threa ed for receiving the long a justing nut 22. The upper edge of cup 20 is provided with a groove and packing m of rubber or other elastic material, ada ted to make a tight joint with the do n ing rib lon the member 4. The rotata le disk 21 will rotate with the holding frame 15 when the latter is rowith the rib l.

' gpenin tated to engage its rib k with the groove 1' in member 4, while the filter cup 20 will not rotate, but will simply be forced upward to press its packin ring m into tight contact e rubber or other packing is thus saved from wear and abrasion.

At the top of cup 20 is secured a perforated water distributing screen 18, 111 an of which is fitted a release member is member is secured .at the lower edge of the water discharge chamber 16 and is of such a form that it cannot pass out of the opening in the screen 18. In case chamber 16 becomes obstructed by any impurities flowing from the boiler 3, the member 17 will be forced upward, so that its point will pass into the chamber 16 and eject impurities deposited therein, thereby restoring the pro or operation of the apparatus.

e pressure re lating,- or relief, valve 27 in chamber 1" as a conical end resting on a seat a at the steam vent assa 9, and is provided with a circular rib or ange r, a ainst which bears a pressure spring 28 for olding the valve on its seat until forced outward by an excess pressure of steam. The rear end of the valve may be forced into a recess a, or through an opening in the end of the screw cap 6. Steam escapes from chamber 1 throu h vent h. The main valve stem 31 is provi ed with a detachable knob 'tus'for preparing a cup of cofiee or handle 31 and its inner end is secured to the valve disk 30 by means of a socket and a short stem 1 on the disk.

When it is desired to operate the apparabevera the valve stem 31 is turned to open the vs vs 30, when water will fiow from chamber 7, through passage 8 into chamber 9, from which it passesto the passage 10 and from which it is discharged throu h feed pipe 11 into boiler 3. Air contains in the boiler will, at the same time, escape throu h passage 13 of siphon 12, passage 14 an 14" to the exterior of the a paratus. When the water flowing into t e boiler reaches the level of the passe. 13 it passes therethrough to the exterior, ollowin the same path as described for the air. e valve stem 31 is then rapidly turned in the opposite direction, which shuts 011' water from the boiler, the same being new filled. The electric current is now switched on to the resistance coils, thereby generating heat to quickly boil the water in boiler 3.

When the water boils it will generate steam which, as it accumulates in the top of the boiler, will cause pressure therein, and thereby force out the water through passa 13, 14 and 14, and chamber 16, until it reaches a level below the siphon 12. When the discharge of water ceases the water remaining in the boiler will produce steam, which will act upon the granular or pulverized coffee in the filter cup to distill oil the essence, or make an infusion or coffee beverage. It will be understood that, at the ri ht moment, after the air has been expelled mm the boiler, the filter cu with its char of granular coffee, will adjusted and old in place by the holding from 15.

By regulating the size of the siphon 12, its lower level will be hi her or lower with respect to the bottom 0 the boiler 3, and therefore the quantity of water drawn from the boiler 3,-the quantity for making an instantaneous cup of coffee-may be calculated and regulated.

The resistance element in this type of apparatus is a metallic cylinder, in this case the boiler 3, on which the insulated resistance wire is wound. The poles of the electric circuit pass inside of the support X, Fi 1, and are connected with the make an break contacts 35, consisting of two metal posts provided with binding screws and nuts for attachment of the electric poles. The make and break contacts 35 are the terminals of the apparatus by means of which the boiler is easi y and quickly heated. The details of construction and arrangement of the electrical devices are well understood by electricians and need not be described herein.

An important feature of my invention is nuance 8 the provision of means for first dischargto said second named passage and opening ing t e required quantity of hot water and into said boiler above said extension pipe. 20 then a supply of steam under pressure from 2. In coffee making apparatus, the comthe boiler, for instantly pre aring an infubination with a horizontally supported 5 sion, decoction, or extract 0 coffee to form clylindrical boiler, of a faucet attached to a beverage, t e outer end thereof and havin therein if cla: water inlet passages, and water ischarge 25 1. In a cofi'ee making apparatus, the conapassages, a controlling valve therefor, a bination with a boiler, a water sup ly chamwater feed pipe and a discharge siphon 1n 1 her, and a filter chamber, of a aucet atthe boiler, connecting respectively with the tached to said boiler and having a passage inlet and discharge passages in the faucet, connecting said supply chamber to said said feed pipe openi ad acent to the bot- 30 boiler, and having a passage connecting said tom of the boiler an the siphon opening boiler to said filter chamber, a manually at a point higher up in the boiler. 15 operated valve in said first named passage, In testimony whereof he aflixes his signaan extension pipe leading from said first tune. named passage into said boiler near the bottom thereof, and a siphon pipe connected MANUEL IGLESIAS. 

